Home / 1,089,991.40-1,634,437.60-331,687.42

Finding the Fourth Proportional to 1,089,991.40, 1,634,437.60 and 331,687.42

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Solution

The fourth proportional to 1,089,991.40, 1,634,437.60 and 331,687.42 is: 497,363.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,089,991.40 : 1,634,437.60 = 331,687.42 : x
  2. Step 2: Convert to fraction form
    1,089,991.40/1,634,437.60 = 331,687.42/x
  3. Step 3: Cross multiply
    1,089,991.40x = 1,634,437.60 × 331,687.42
  4. Step 4: Simplify right side
    1,089,991.40x = 542,122,385,779.68
  5. Step 5: Solve for x
    x = 542,122,385,779.68/1,089,991.40
  6. Step 6: Final answer
    x = 497,363.91

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.